Trigger mechanism for key-operating machines.



4 IIIIIIIIIJ 'IIIIIII D. PETRI-PALMEDO.

TRIGGER MECHANISM FOR KEY OPERATING MACHINES.

APPLIOATION FILED 13130.13, 1912.

Patented Dec. 9, 1913.

2 SHEETS-SHEET 1.

LL r L s? i l u/(q/(fu' (MIA/g4 D. PETRI-PALMEDO.

TRIGGER MECHANISM FOR KEY OPERATING MACHINES.

APPLICATION IIVLED DEU.13. 1012.

Patented Deg 9, 1918 2sn ;m...

Jaye-K607" I exact description.

- D as ATENT OFFICE.

DAVID. PETRI-PALMEZDO, 0F BRIDGEPORT, CONNECTICUT, ASSIGNOR T0 ELECTRIC COMPQSITORICOMPANY, 01? NEW YORK, N. Y.. A CORPORATION OF NEW JERSEY.

oa ers.

Specification of Letters Patent.

Patented Dec. ,1913.

Application filed December 13, 1912. Serial No. 736,577.

Tool! whom it may concern:

Be it known that I DAVID PETRI-PALMEDO, a citizen of the United States, residing at Bridge ort, in the county of Fairfield and State 0 Connecticut, have invented a certain new and useful Improvement in Trigger Mechanism for Key-Operating Machines, of which the following is a full, clear, and

In many kinds of machines, it is desirable that an operator be able by the application of slight effort to set in action a relay of plower for the performance of useful work.

specially is this true in many varietles of key board machines, such as matrix assembling machines, type setting machines, typewritlng machines, and the like. In such machines the efiicienc of the operator is in a large degree depen out upon the ease with which he can operate the keys.

The object of this invention is to associate with the keys, power relay mechanism which may be set in motion by the application of slight force to the keys, and which, when set in motion, will severally cause the operation of those parts, which, in key board machines, are usually operated by the keys as the direct result of the power ap plied thereto. Wit-h the present invention,

however, the keys act merely as triggers to render temporarily inoperative devices which normally restrain the operation of power driven devices capable of performing the required work when such restraining devices are withdrawn.

The invention is shown in the accompanying drawings, and hereinafter described and pointed out definitely in the claims.

In said drawin s, Figure 1 is a sectional side elevation wit the parts in normal position at rest, of the mechanism embodying this invention. Fig. 2 is a similar view of the same parts when they are in the position they occupy when the ring C has made ap proximately three quarters of a revolution. Fig. 3 is a front elevation artly in section of a part of a machine em odymg this invention. Fig. 4, is an enlarged longitudinal section through a part of shaft B, showin some of the grooves therein and associate eccentric rings. Fig. 5 is an enlarged transverse section of shaft B showing a ring hanging in a groove therein.

Referring to the parts by letters, B re re sents a suitably mounted horizontal s aft which extends crosswise of the machine,-- which shaft is to be constantly rotated while the machine is in use. A plurality of V sha ed annular grooves b are formed in this sha t. Associated severally with these grooves are trains of mechanism which are all alike and which include parts constructed and combined as follows: An eccentric ring (3 embraces the shaft. The ring has a cylindrical eriphery; and it has also an eccentrica 'ly placed cylindrical hole 0, the periphery of which is of V-shape to correspond with and fit the V-shaped groove 6 with which the ring is associated. The hole 0 is of larger diameter than the shaft and therefore these rings may he slipped endwise over the shaft and along the same to the required position. When an one of these rings is permitted to hang own and rest upon the shaft, the V-shaped edge of the hole will v enter and nicely fit the V-shaped groove. f. Thereafter as the shaft turns, the ring will iroll upon it because of the friction between 1 the V surfaces. The .hole of the-ring being eccentric, the thick part of the rim will gradually rise to the top of the sha t and will pass over and go down again, thus acting llke a true eccentric. The weight of the eccentric ring is sufiicient to start and maintain this action, if the angle of the V surfaces are sufliciently acute and the groove sufiicientl deep. The depth, however, need only he s ight in any practical construction. The grip of the ring on the shaft is slight so long as no load, is upon the ring. Under such circumstances, however, the power required to turn the ring is slight because the ring in turning is doing no work. The grip of the ring upon the shaft, however, increases With the load applied to it; and in all practical constructions for which this invention is adapted the increased grip or fric tion dueto the load is sufiicient to cause the ring to turn, and in turning to-do the work required to lift the load.

The ring is normally held up and out of contact with the shaft, as shown in the drawing, by means of a shoe D which straddles a pin 6 carried by, a lever E pivoted at e to a fixed frame member A. This shoe is on the rear side of the pivot of the lever. The front end of the lever projects into a notch f in the rear edge of a thin link F in its normal which is under the influence of a light spring G which acts to press the link downward and rearward. The lower end of the link has a shoulder f which lies above and in contact with the rear end of a pivoted key lever H. In depressing this key lever by downward pressure on the key piece K secured to its front end, the link is raised, and this causes the upward rocking of the front end and a downward movement of the rear end of the lever E. This results in a corresponding downward movement of the associated shoe D. When the shoe does so move down, the associated ring C will drop into the associated V groove, and will then be turned, as before stated, by said rotating shaft B. As the ring turns, its thickened portion will move up and sooner or later come into contact with the load lever M, which is located above it and is pivoted at its front end to a fixed part a of the frame work. Its rear end normally restsupon a fixed bar 0, whereby it is held in a position such that it does not contact with the low part of the eccentric ring when the latter is osition before explained, that is, the posltion it will occupy when the ring is resting on shoe E and is held up out of contact with the shaft. As the periphery ofthis ring comes in contact with this load lever M the gripping power of the ring on the shaft is increased with the increased load, wherefore the ring will continue to turn. The result is that this lever M will be rocked upward by the eccentric ring and then allowed to rock back to its normal position as stated. This lever M may be associated with any suitable mechanism which it is desired to operate. In the construction shown a reed N which is movable vertically in suitable guides rests at its lower end on the rear end of the load lever M. This reed may by its up and down movement operate matrix magazine escapement mechanism substantially such, for example, as is shown in the prior Patent No. 7 91,131.

In order that the operator may remove his fingerfrom the key immediately after he has depressed it, to cause the stated upward movement of link F said link is formed with the rearwardly extended lug f When the link is lifted, the spring G will move it rearward until said lug slips over a fixed bar L, whereby the link will for the time being be upheld. The link, however, ismade so thick from front to rear, in that but moving downward. As the link de-' scends, lever E will be rocked and shoe D will be carried up to its normal position, where it will meet the descending thick part of the ring in such wise as to again lift the ring from the shaft. Before the ring is so lifted the load lever M has come to rest with its rear end resting on bar 0, so as to be out of contactwith the surface of the ring.

Therefore the shoe in raisin the ring out of its groove has but slight riction to overcome, namely, only that friction due to the weight of the ring.

To guard against thering throwing over beyond its normal resting position, the lower edge of the bar M is provided with a shallow rearwardly projecting shoulder m, and the periphery of the ring is cut away to form a forwardly projecting shoulder 0 These shoulders come into contact when the ring has turned as far as desired, and has been lifted'out of its groove.

As before stated, there are a plurality of the above described trains of mechanism. Each is associated with a groove 12 in shaft B. The rings 0 are made of such thickness,

that they lightly touch one another on their 'side faces, so as to prevent them from moving lengthwise of the shaft out of alinement with the associated grooves 12 inshaft B.

Having described my invention, I claim: 1. In trigger actuated power relay mechanism, the combination of a rotatable shaft,

an eccentric ring embracing said shaft loosely, means normally holding the ring up out of contact with said shaft, means to withdraw said holding means, and a device arranged to be engaged and moved by the eccentric ring when the latter is supported afid turned by said shaft.

2. In trigger actuated power relay mechanism, the combination of a rotatable shaft,

an eccentric ring embracing said shaft loosely, means normally holding the ring up V out of contact with said shaft, means to withdraw said holding means, and a device arranged'to be engaged and moved by the eccentric when the latter is supported and turned b said shaftf-said shaft having an annular groove and the ring having the margin of its eccentrically placed hole formed of corresponding V shape.

3. In trigger actuated power relay mechanism, the combination of a rotatable shaft anism, the combination 0 having a plurality of circumferential V shaped grooves and the following mechanism associated with each groove, to wit, a circular ring having through it an eccentrically placed circular hole which is of larger diameter than the shaft, and has a V-shaped edge,-said ring being arranged in the same transverse plane as the associated groove on the shaft, means normally holding the ring up out of contact with said shaft, means to withdraw said holding means and thereby allow the ring to drop onto the shaft whereby when the shaft is turned, said eccentric ring will also be turned, and a device arranged to be engaged and moved by the eccentric ring when the latter is supported and turned by said shaft.

4. In trigger actuated ower relay mechf a rotatable shaft, an eccentric ring embracing said shaft loosely, a vertically movable shoe arranged below said ring and adapted to lift the same out of contact with shaft, mechanism for raising andlowering said shoe, and a device arranged above the eccentric ring and adapted to be engaged and moved thereby when the latter is supported and turned by said shaft.

5. In trigger actuated power relay mechanism, the combination of a rotatable shaft, an eccentric ring embracing said shaft loosely, a vertically movable shoe arranged below said ring and adapted to lift the same out of contact with shaft, mechanism for raising and lowering said shoe, a pivoted lever engaging said shoe and adapted to raise and lower the same, mechanism for actuating the last mentioned lever, and a device arranged above the ring and adapted to be engaged and moved thereby when the latter is supported and turned by said shaft.

6. In trigger actuated power relay mechanism, the combination of a rotatable shaft, an eccentric ring embracing said shaft loosely, a vertically movable shoe arranged below said ring and adapted to lift the same out of contact with shaft, mechanism for raising and lowering said shoe, a pivoted lever engaging said shoe and adapted to raise and lower the same, mechanism for actuating the last mentioned lever, a device arranged above the ring and adapted to be engaged and moved thereby when the latter is supported and turned by said shaft, a vertically movable link for rocking lever, and a key lever for raising said link.

7. In trigger actuated ower relay mechanism, the combination 0 a rotatable shaft, an eccentric ring embracing said shaft loosely, a vertically movable shoe arranged below said ring and adapted to lift the same out of contact with shaft, mechanism for raising and lowering said shoe, a pivoted lever engaging said shoe and adapted to with the shaft and raise and lower the same, mechanism for actuating the last mentioned lever, a device arranged above the ring and adapted to be engaged and moved thereby when the latter is supported and turned by said shaft, a vertically movable link for rocking said lever, which link has a rearwardly projecting shoulder, a bar over which said shoulder may be hooked when the link is raised, a spring acting to ush the link rearward, and means whereby t 1e link will be pushed forward to disengage the shoulder from said bar when the ring has nearly completed one revolution.

8. In trigger actuated power relay mechanism, the combination of a rotatable shaft,

an eccentric ring embracing said shaft loosely, a vertically movable shoe arranged below said ring and adapted to lift the same out of contact with shaft, mechanism for raising and lowering said shoe, a pivoted lever engaging said shoe and adapted to raise and lower the same, mechanism for actuating the last mentioned lever, a device arranged above the ring and adapted to be engaged and moved thereby when the latter is supported and turned by said shaft, a vertically movable link for rocking said lever, which link has a rearwardly projecting shoulder, a bar over which said shoulder may be hooked when the link is raised, a spring acting to push the link rearward, said link being extended rearwardly adjacent to the ring to such position that it will be engaged by the periphery of the eccentric ring and pushed forward so as to disengage the shoulder from said bar while the ring is being turned by said shaft.

9. In trigger actuated power relay mechanism, the combination of a rotating shaft, an eccentric ring embracing said shaft loosely, a shoe arranged below said ring and adapted to be raised and lowered, and when raised to lift the ring out of engagement with the shaft and when lowered means for raising and lowering said shoe, a

vertically movable device above the ring and arranged to be engaged and lifted by the ring while the latter is hanging upon and being turned by the shaft, means limiting the downward movement of said device, and two shoulders, one on the ring and one on the device adapted to come into engagement when said device is in its lowest position and when the ring has been raised out of contact with the shaft.

10. In trigger actuated power relay anism, the combination of a rotatin shaft, an eccentric ring embracing sai shaft loosely, a shoe arranged below said ring and adapted to be raised and lowered and when mechraised to lift the ring out of engagement w en lowered to allow .purpose by the action of the ring while the -latter is being turned by the shaft, means .41 ma am the ring to hang upon the shaft, means for ring and adapted to be engaged and moved 1o holding said shoe in its lowered position, upward thereby while the ring is rotating. said means being arranged so as to be dis- In testimony whereof, I hereunto afix my engaged and rendered inoperative for that signature in the presence of two witnesses.

DAVID PETRI-PADO.

for automatically raising said shoe when Witnesses: said upholding means are so rendered inop- GUY Lnu HAMMOND, erative, and a device arranged above the JAMES HENRY LONDON. 

